Portion of a headphone



FIG. 1 is a rear and top perspective view of a portion of a headphone design showing my new design.

FIG. 2 is a front view of a portion of a headphone.

FIG. 3 is a rear view of a portion of a headphone.

FIG. 4 is a left side view of a portion of a headphone.

FIG. 5 is a right side view of a portion of a headphone.

FIG. 6 is a top view of a portion of a headphone; and,

FIG. 7 is a bottom view of a portion of a headphone.

The broken lines illustrate environment and form no part of the claimed design. 

CLAIM The ornamental design for a portion of a headphone, as shown and described. 